What is the kinetic energy of an object with a mass of $3 \ kg$ and a momentum of $2 \ Ns$?

Give an important factor to control the speed of a vehicle in the area of a school or hospital.

$A$ light and a heavy body have equal momenta. Which one has greater kinetic energy $(K.E.)$?

Two masses of $1\,kg$ and $16\,kg$ are moving with equal kinetic energy. The ratio of the magnitude of their linear momentum is:

Two masses of $1 \ g$ and $4 \ g$ are moving with equal kinetic energy. The ratio of the magnitudes of their momenta is

$A$ bullet of mass $200\,g$ having initial kinetic energy $90\,J$ is shot inside a long swimming pool as shown in the figure. If its kinetic energy reduces to $40\,J$ within $1\,s$,the minimum length of the pool the bullet has to travel so that it completely comes to rest is $.....m$.